Ad Memcache
Advanced cache
Ajaxify Regions
Apache Solr Search Integration
ApacheBench
APC - Alternative PHP Cache
Authenticated User Page Caching (Authcache)
Bandwidth API
Beautify
Block Cache
Block Cache Alter
Boost
Cache
Cache browser
Cache Router
Cache Static
CacheExclude
CDN integration
CloudFront
Compound Eye
CouchDB integration
Creeper
CSS Gzip
Database tweaks
Diagnostic Tools
Drupal tweaks
Drush extras
Elysia Cron
Episodes
Fast Private File Transfer with X-send file
fastpath_fscache
Image optimize (OptiPNG)
Javascript Aggregator
Magic Cache
Memcache API and Integration
Network Manager
No Anonymous Sessions
Parallel
Path Cache
Personalized Settings
PHP4
PowerSQL
Previous/Next API
Queue Mail
Site Splitter
SuperCron
Term lower name